Bi-LED Signal Combiner (Switched Negative)

Bi-LED Signal Combiner
Plug-and-Play Solution for Bi-LED Projectors on 3-Wire Headlight Systems
The Bi-LED Signal Combiner is a diode-isolated adapter designed to let you run bi-LED projectors on vehicles that use a 3-wire high/low beam bulb setup (such as H11-style systems) — without cutting, splicing, or rewiring the factory harness.
Many modern vehicles use a shared ground with separate high-beam and low-beam power signals. Bi-LED projectors require a single trigger signal for the solenoid, which typically forces installers to modify factory wiring. The Bi-LED Signal Combiner cleanly merges the high- and low-beam signals using proper diode isolation, ensuring correct operation while preventing back-feeding or electrical interference.
 
Key Features
No-rewire, plug-and-play design
Diode-isolated high/low signal merging
Compatible with H11 and similar 3-wire headlight systems
Safely triggers bi-LED projector solenoids
Prevents back-feeding and unwanted electrical issues
Ideal for retrofits, DIY builds, and OEM-style installs
 
Compatibility
Vehicles using 3-wire headlight bulbs (shared positive, separate high/low ground)
Bi-LED projectors requiring a single solenoid trigger input 
 
What’s Included
Bi-LED Signal Combiner module set of 2
Pre-terminated leads